Contained in, it says. Maybe it's something that spawns during an encounter that you have to open or something. Could be something sneaky.

dono but I've made a thread about it on the blizz forums hopefully i can catch the attention of a blue and get a answer, i surely hope its not like that, as i seen nothing of the sort while clearing yesterday

---------- Post added 2013-03-16 at 02:43 PM ----------

seems that the burning seed didn't make it live as it isn't in the 5.2 patch notes

I couldn't find a pug for FL but a friend went in the other day, as druid and said he saw nothing of it. So if it's "Guaranteed", it's rather a bugged drop (like feng offhand) or is from something outside a raid boss. The fact that WoWhead has not mined a location of this is worrying.

*edit* I looked around the firelands daily hub, didn't find anything. Although there are some druid of the flames that are stood, channeling a beam into an orb. I wonder if it's something to do with that. I know theres a daily to pick up that orb but I didn't do those dailies on this character, so I have no idea if it's anything to do with it. Maybe someone with all the dailies open in that area can go and see.

I couldn't find a pug for FL but a friend went in the other day, as druid and said he saw nothing of it. So if it's "Guaranteed", it's rather a bugged drop (like feng offhand) or is from something outside a raid boss. The fact that WoWhead has not mined a location of this is worrying.

*edit* I looked around the firelands daily hub, didn't find anything. Although there are some druid of the flames that are stood, channeling a beam into an orb. I wonder if it's something to do with that. I know theres a daily to pick up that orb but I didn't do those dailies on this character, so I have no idea if it's anything to do with it. Maybe someone with all the dailies open in that area can go and see.

wow europe has it lasted as a drop from within firelands from "burning seed refer to post 23

maybe they drop from the quest hub place that is also called firelands?
you know the place with hunter pets and such?

*edit* for sure not in firelands's raid landscape or something, looked so hard that I managed to get to ragnaros room without killing any boss.
clicked on every insect, every red pixel and even tried to swipe at invisible things.

*edit2* will now try to use hunter who has the molten front fully opened and see if the cache gives seeds
*edit3* nothing at all

I guess this is part of the fun. For it to go un-noticed for this long, especially with the amount of firelands runs, you would have expected someone to have seen it. Yet nothing, must be very well hidden.